H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/33
H04N 11/04 (2006.01) G06T 9/00 (2006.01) H04N 7/34 (2006.01)
Patent
CA 1312371
- 19- DIGITAL VIDEO ENCODER Abstract A differential pulse code arrangement reduces the bit rate of a composite color video signal by sampling the video signal at a predetermined rate of m times the color sub-carrier frequency, predicting the present video signal sample from reconstructed past samples and forming signal representative of the prediction error in a first predictive loop. The bit rate is further reduced in a second predictive loop embedded in the first predictive loop by generating a signal predictive of the error signal and forming a signal corresponding to the difference between the error signal and the signal predictive thereof. The difference signal is quantized and encoded for transmission. The error signal is reconstructed by summing the quantized difference signal and the predicted error signal and the prediction of the error signal is formed responsive to the sequence of past reconstructed error signals. The m-lth video signal sample is then reconstructedby summing the reconstructed error signal and the signal predictive of the m-lthvideo sample and a signal predictive of the next occurring video sample is generated responsive to the sequence of past reconstructed video samples.
608170
Goodfellow Douglas Jesse
Utberg Daniel Nash
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
Digital video encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital video encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital video encoder will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1210459